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How to change the CHARACTER SET (and COLLATION) throughout a database?
...n in a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
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utf8_general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text. What it does is:
converts to Unicode normalization form D for canonical decompositio...
How to make MySQL handle UTF-8 properly
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Update:
Short answer - You should almost always be using the utf8mb4 charset and utf8mb4_unicode_ci collation.
To alter database:
ALTER DATABASE dbname CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
See:
Aaron's comment on this answer How to make MySQL handle UTF-8 properly
W...
How can I transform string to UTF-8 in C#?
...:
byte[] bytes = Encoding.Default.GetBytes(myString);
myString = Encoding.UTF8.GetString(bytes);
Another thing you may have to remember: If you are using Console.WriteLine to output some strings, then you should also write Console.OutputEncoding = System.Text.Encoding.UTF8;!!! Or all utf8 strings...
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在使用手机APP 时，文本朗读器功能，可不可以用开关控件，想使用这个功能的时候，打开，不想使用的时候关闭?文本朗读器本身就是你自己来控制的，代码块调用它才能朗读文本，本身就类似有开关控制！代码块调用它才能朗...
How to change collation of database, table, column?
The database is latin1_general_ci now and I want to change collation to utf8mb4_general_ci .
19 Answers
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Why would json_encode return an empty string
...ns probably a faulty response, some strings were probably not UTF-8
using utf8_encode() on those string solved my problem, but see note below
Here is a recursive function that can force convert to UTF-8 all the strings contained in an array:
function utf8ize($d) {
if (is_array($d)) {
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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...ne will see squares if you are not using fonts that support them.
MySQL's utf8 only supports basic multilingual plane, and you need to use utf8mb4 instead:
For a supplementary character, utf8 cannot store the character at all,
while utf8mb4 requires four bytes to store it. Since utf8 cannot s...
Illegal mix of collations MySQL Error
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SET collation_connection = 'utf8_general_ci';
then for your databases
ALTER DATABASE your_database_name CHARACTER SET utf8 COLLATE utf8_general_ci;
ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
MySQL sneaks swe...
What is the MySQL VARCHAR max size?
...r, note that the limit is lower if you use a multi-byte character set like utf8 or utf8mb4.
Use TEXT types inorder to overcome row size limit.
The four TEXT types are TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT. These correspond to the four BLOB types and have the same maximum lengths and storage ...